Offshore production nearly 30% of global crude oil output in 2015

Global offshore oil production in 2015 was at the highest level since 2010, and accounted for nearly 30% of total global crude oil production. Offshore oil production increased in both 2014 and 2015, reversing consecutive annual declines from 2010 to 2013. Production from onshore tight oil plays has increased faster over the past several years and accounts for an increasing amount of total oil production.
Source: Today In Energy